Mystery Diamond Treatment Dominates GIA Symposium

This was the first symposium since 1991, and it was supposed to be about a wide variety of subjects. It was, but attention seem focused mainly on one. JCK's three on-site editors brought back these reports. hould jewelers start warning customers that the diamond they're buying could be treated for color, but that there's no way of knowing for sure? That troubling question nearly upstaged the Gemological Institute of America's long-awaited Third International Gemological Symposium, held in late June at the bayside San Diego Hyatt Hotel. Designed as an unparalleled educational event, the four-day gathering featured world-famous speakers addressing a range of topics from 19th-century French jewelry to contemporary ethics. But topic No. 1 among the 1,450 attendees turned out to be the secret new diamond color-improving process announced last March by Lazare Kaplan International (LKI),
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